How To Fix CN758 - No more item numbers available (please check)

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 758

• Message text: No more item numbers available (please check)

What causes this issue?

The item number for components in the network can no longer be assigned
automatically, since the number interval has been exhausted.

System Response

All further items receive the item number 9999.

How to fix this error?

You can renumber the items
Choose in Customizing in the profile data a smaller stepsize for the
component item numbers.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN758 - No more item numbers available (please check) ?

  The SAP error message CN758 "No more item numbers available (please check)" typically occurs in the context of project management or when dealing with network activities in SAP. This error indicates that the system has run out of available item numbers for a particular project or network, which can happen due to various reasons.
  Causes:
  
  Exhaustion of Number Ranges: The number range defined for the project or network activities has been exhausted. This can happen if the number range is too small for the volume of items being created.
  Configuration Issues: The number range configuration may not be set up correctly, or the number range may not be active.
  System Limits: There may be system-imposed limits on the number of items that can be created within a certain context.
  
  Solutions:
  
  
  Check Number Range Configuration:
  
  Go to the transaction code SNRO (Number Range Objects).
  Look for the relevant number range object associated with your project or network activities (e.g., CN_NUM for network activities).
  Check the current status of the number range and see if it has been exhausted.
  
  
  
  Extend the Number Range:
  
  If the number range is exhausted, you can extend it by adjusting the upper limit of the number range.
  Ensure that the new range does not conflict with existing numbers.
  
  
  
  Activate Number Range:
  
  If the number range is not active, you may need to activate it in the configuration settings.
  
  
  
  Consult with SAP Basis or Configuration Team:
  
  If you do not have the necessary permissions to change number ranges, consult with your SAP Basis or configuration team to make the necessary adjustments.
  
  
  
  Check for Custom Developments:
  
  If there are any custom developments or enhancements in your SAP system, ensure that they are not interfering with the standard number range functionality.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  CN01 - Create Work Breakdown Structure (WBS)
  CN02 - Change Work Breakdown Structure (WBS)
  CN03 - Display Work Breakdown Structure (WBS)
  
  
  
  Documentation: Refer to SAP Help documentation for detailed information on number range management and project management.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  
  By following these steps, you should be able to resolve the CN758 error and continue with your project management tasks in SAP.